3 papers
physics.geo-ph2026
High solubility of water in post-perovskite and bridgmanite in the Earth's deep lower mantle
Megumi Semba, Naoya Sakamoto, Shuhei Mita +5
Water in the Earth's mantle induces melting, giving rise to strong chemical heterogeneity, and alters its rheological and transport properties, which are keys to understanding seis…
astro-ph.EP2025
Core-mantle partitioning and the bulk Earth abundances of hydrogen and carbon: Implications for their origins
Yutaro Tsutsumi, Naoya Sakamoto, Kei Hirose +4
We determined the metal/silicate partition coefficients of hydrogen and carbon, DH and DC, simultaneously under typical conditions of Earth's core formation. Experiments demonstrat…
cond-mat.mtrl-sci2024
Fe-FeH Eutectic Melting Curve and the Estimates of Earth's Core Temperature and Composition
Shuhei Mita, Shoh Tagawa, Kei Hirose +1
Fe and FeH form a binary eutectic system above ~40 GPa. Here we performed melting experiments in a laser-heated diamond-anvil cell (DAC) and obtained the Fe-FeH eutectic melting cu…